Power Systems A 3-phase transmission line has its conductors at the corners of an equilateral triangle with side 3m. The diameter of each conductor is 1.63 cm. The inductance of the line per phase per km is 1.182 mH 1.093 mH 1.043 mH 1.232 mH 1.182 mH 1.093 mH 1.043 mH 1.232 mH ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 50 kA. 35 kA. 45 kA. 55 kA. 50 kA. 35 kA. 45 kA. 55 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conversion ratio of breeder reactor are less than 1. greater than 1. 1. none of above. less than 1. greater than 1. 1. none of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following grounding is not practically preferred for protection of equipments? isolated grounding resistance grounding reactance grounding All of these isolated grounding resistance grounding reactance grounding All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ABCD constants of a 3-phase transmission line are A = D = 0.8∠1°, B = 170∠85° Ω , C = 0.002∠90.4° ℧. The sending end voltage is 400 kV. The receiving end voltage under no load condition is 500 kV 600 kV 350 kV 400 kV 500 kV 600 kV 350 kV 400 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong? Unreliable convergence Slow convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence Unreliable convergence Slow convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence ANSWER DOWNLOAD EXAMIANS APP
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